Gtjstaf olson



G. OLSON.

COMBINED FLUID PUMP AND MOTOR. APPLiCATlON FILED JUNE 4. I917.

PatentedSept. 23, 1919.

UNITED STATES Parlour orricn.

GUST-AF OLSON, OF CHICAGO, ILLINOIS, AS SIGNOR OF ONE-HALF T0 WILLARD M.MOEWEN, OF CHICAGO, ILLINOIS.

COMBINED FLUID PUMP AND MOTOR.

Specification of Letters Patent. Pat9n$efl S t 23 19 19 Applicationfiled June 4, 1917. Serial No. 172,669.

To all whom it may concern: Be it known that I, GUSTAF OLsoN, a citizenof the United States of America, and a resident of Chicago, county ofCook, and State of Illinois, have invented certain new and usefulImprovements in Combined Fluid Pumps and Motors, of which the followingis a specification.

This invention relates to improvements 1n comlbined fluid pumps andmotors of the type wherein a plurality of vanes, shiftably mounted on arotor eccentrically journaled Within the stator, are normally held withthe ends thereof in close proximity with the walls of said chamber assaid vanes move therethrough during the rotation of said rotor.

The main object of this invention is to provide improved means foradjusting the vanes on the rotor, so as to vary the proximity of thevane ends with the walls of the pressure chamber.

An illustrative embodiment of this invention is shown in theaccompanying drawings, in which:

Figure l is an end elevation partly sectional of the device. 0

Fig. 2 is a transverse sectional elevation of the device.

The device herein illustrated is the same as that shown and described inmy copending application Serial N 0. 119,462, filed September 11, 1916.As in sand copendmg application the device is illustrated as an aircompressor or pum and is herelnafter 50 described, but it wi 1 beunderstood that it is equally suitable for use with other fluids as acompressor or pump, or that 1t may be used as a fluid operated motor byan obvious reversal of some of the parts.

In the construction herein illustrated, a casing 1, supported on astandard 2, is provided with a chamber 3 which is a composite formationof two eccentrically arranged bores, the centers of which are designated5 and 7 respectively. The wall of the chamber therefore comprises twoopposed arcuate parts 4 and 6.

The rotor comprises a disk-shaped memher 8 having a hub portion 9 keyedto the shaft 10 and having an axially dlsposed annular flange 11. Theshaft 10 is journaled m a bearing 12 formed on the casing 1 with itsaxis comcident with the center 5, whereby the rotor is mounted so thatthe periphery of the flange 11 fits with the wall 4 and provides a space13 between the periphery of said flange and the wall 6. A ring-shapedmember 14 is secured to the flange 11, so as to overlap the inner andouter periphery thereof and provide a projecting flange which isrotatably supported in a circular recess 15. The recess 15, which isformed in the casing 1 with its center coincident with the center 5 ofthe wall 4-, provides a circular shoulder portion against which theprojectlng flange part of the ring 14 fits. The ring 14 thus forms aclosure for the space'between the outer periphery of the flange 11 andthe walls 4 and 6, and coacts with the disk 8 and flange 11 to provideguideways for the vanes 16.

A plurality of vanes 16 are carried by the rotor, being shiftabl mountedin the radially disposed slots 12; formed in the disk 8 and flange 11.These vanes are reciprocated in their respective slots through theaction of the guide member 18, so that the ends thereof are urged intoclose proximity with the annular walls 6 as they are moved by the rotor,the vanes being shifted outwardly as they move around the lower part ofthe chamber 13 and shifted inwardly as they are moved through the upperpart of said chamber.

The guide member 18 is rotatably mounted on roller bearings 18.1 on ashaft or pin 19 carried by a plate 20, which together with a secondplate or disk 21 forms a closure for the casing. The shaft 19 isdisposed with its axis coincident with the center 7, thereby beingeccentrically located with respect to the axis of the rotor. An annularroove 22 is formed in the face of the mem er 18, which is opposed to therotor disk 8. Blocks or vane-bearings 23 are shiftably mounted in thegroove 22 and are provided with circular openings 24 which receivefingers 25 formed on the vanes 16. This arrangement of the bearings 23provides a rigid but shiftable pivotal support for the inner ends of thevanes 16 and allows guide member 18 as they are rotated around thechamber 3.

The plate 20 is secured to the plate 21 by means of stud bolts 26, andthe plate 21 is in turn attached to the casing 1 by means of suitablebolts 27, so as to form a fluidtight seal for said chamber. Elongatedholes 28 are formed in the plate 20 to receive the bolts 26 so that theplate 20 may be shifted relative to the plate 21 for the purpose ofadjllStlIl" the eccentricity of the guide member 18 with respect to therotor 8. This adjustment of the guide member 18 enables the obtention ofa more nearly perfect contact of the vanes 16 with the wall 6 of thecasing chamber. This adjustment is of material advantage for the reasonthat with the relation of these rotating parts definitely fixed withinthe casing it is extremely difficult to form all of said partssufiiciently accurate to insure an air tight fit of the ends of thevanes 16 with wall 4. With present adjustment such extreme care does nothave to be exercised in the construction of the vanes and guide member,for now, after being assembled within the easing the plate 20 may beshifted to bring the vanes into proper contact with the wall 4.

The construction and arrangement of the rotor, the guide member 18, andclosure 20- 21, as herein illustrated, provide an annular compartment 31between all of the parts inwardly of the inner periphery of the flange11. This space is adapted to contain a quantity of oil which serves thedouble function of providing a lubricant for all the moving parts of thedevice and keeping them cool.

Inlet and outlet ports 29 and 30 are formed in opposite sides of thecasing 1, so as to communicate with respectively oppo site ends of thespace 13.

In the construction herein shown, these ports are axially disposed andlocated so as to connect with the ends of the chamber 13.

A series of fins 32 are formed on th exterior parts of the casing 1,which provide for the dissipation of heat created by the operation ofthe device.

The operation of the device herein shown is as follows The shaft 10 isto be driven by a suitable source of power which may be connected to theusual shaft coupling 33. For following out the operation of the device,it will be assumed that the rotation is in the direction of the arrow34.

The rotation of the rotor and the guide member 18 about their eccentriccenters 5 and 7 causes the vanes 16 to reciprocate so that as the vanesapproach the rlght hand end of the space 13 (Fig. 1), they are caused tomove out into contact with the annular wall 6, and recede as they aproach the left hand end of said space. s each of the vanes passes theannular opening 29, a vacuum is created rearwardly thereof which isfilled with air admitted through said inlet 29.

As each of the vanes approaches the outlet 30, the air in advance ofeach of said vanes is compressed and discharged through said outlet 30,as will be obvious.

When the parts are assembled in the casing chamber, the plate 20 is setso as to provide the desired adjustment of the vanes 16 with the wall 4.If the device is to be used for pumping air, the vanes usually require apositive contact of the vane ends with the wall. If a liquid is to bepumped, the vane ends do not need to contact with the wall 1. As thevanes wear on the ends the plate 20 may be shifted so as to take up thewear.

Although but one specific embodiment of this invention has been hereinshown and described, it will be understood that numerous details of theconstruction shown may be altered or omitted without departin from thespirit of this invention as de ned by the following claims.

I claim:

1. In a device of the class described, the combination of a casinghaving a chamber formed therein, a rotor journaled in a hearing formedon one side of said casing having the periphery thereof fit, with thewall of said chamber and providing a space between said periphery andthe remaining portion of said chamber Wall, a plurality of radiallymovable vanes mounted on said rotor, a guide member rotatably mounted ina bearing formed on the opposite side of said casing eccentrically ofsaid rotor hearing, said guide member eoacting with said vanes fornormally holdin the ends thereof in close proximity to said remainingpart of said chamber wall as they traverse said space, and means on saidopposite side of said casing for adjusting the eccentricity of thebearing of said guide member with respect to said rotor bearing so as tovary the proximity of said vane ends with said chamber wall.

2. In a device of the class described, the combination of a casinghaving a chamber formed therein, a rotor journaled in a hearing formedon one side of said casing having the periphery thereof fit with thewall of said chamber and providing a space between said periphery andthe remaining portion of said chamber wall, a plurality of radiallymovable vanes mounted on said rotor, a guide member rotatably mounted ina bearin formed on the opposite side of said casing eccentrically ofsaid rotor bearing, said guide member coacting with said vanes fornormally holding the ends thereof in close proximity to said remainingpart of said chamber wall as they traverse said space, and a plateforming part of said opposite side of said casing carrying said rotorbearing, said plate being shiftable so as to adjust the eccentricity ofsaid guide member bearing with said rotor bearing, so

as to vary the proximity of said vane ends with said remaining part ofsaid chamber 10 wall.

Signed at Chicago this 31st day of May, 1917. V

GUSTAF OLSON.

